Gearbox oil for MT, non-American source

We have heared a lot about different brands of suitable MT gearbox oil, as available in America.

Here is an alternative fully synthetic sort that might even be the most suitable of all, and it is available outside of the Americas.

The brand is ROWE, the sort is called "Topgear FE S 75W-80 GL4/5"
Factory order number is 25066

According to factory, ( http://rowe-mineraloel.com/en/ ) it exceeds both GL4 and GL5, meaning it will not corrode or wreck the brass synchro rings as straight GL5 would, but includes the better anti-foaming and anti-wear data as GL5. Data sheets can be downloaded from their pages, and you could also reach them by phone and ask for an engineer.

In direct comparison to Mitsubishi MZ 312644, it has the same neutral colour and same almost odourless smell, but is very slightly thinner at room temperature. According to data sheets, it is also slightly thinner than Redline 75W-80 GL4
Below is a picture of a one-Litre bottle, being the same stuff I use.